I've dealt with smith and smith once, they didn't have a windscreen in stock in Hamilton or taupo... My van is a fairly common mazda 1800i. Was a weeks wait.

Next time went to Hamilton windscreens down Te Rapa straight. Didn't call ahead, just pulled in the shop. Drove out with a new windscreen 20 mins later with a cup of milo. Same story again next stone chip.